High speed impact print hammer assembly with resilient energy storing means

Claim 1

A PRINT ASSEMBLY FOR IMPACTING A CONTINUOUSLY ROTATING TYPEWHEEL COMPRISING IN COMBINATION, A MOVABLE ELECTROMAGNETIC ARMATURE, A RELAY FOR MOVING SAID ARMATURE RESPONSIVE TO ELECTRONIC SIGNALS, A HOUSING, SAID HOUSING FORMING AN ENCLOSURE HAVING OPPOSITE END WALLS WITH APERTURESTHEREIN, MEANS FOR RELATIVELY POSITIONING ONE OF SAID END WALLS, A MOVABLE HAMMER PIN HAVING AN INTEGRAL YOKE MEMBER LOCATED WITHIN SAID ENCLOSURE, SAID HAMMER PIN HAVING TWO STEMS, EACH OF SAID STEMS PROJECTING THROUGH AN APERTURE IN ONE OF SAID OPPOSITE END WALLS, ONE STEM OPPOSITE THE RELATIVELY POSITIONABLE END WALL BEING POSITIONED FOR INTERCEPTING AND RECEIVING THE IMPACT OF SAID MOVABLE ARMATURE, AN ENERGY STORING RESILIENT BUMPER POSITIONED UPON THE RELATIVELY POSITIONABLE SAID END WALL TO INTERCEPT SAID YOKE, THE MOVEMENT OF SAID HAMMER PIN BEING CONFINED BY SAID YOKE IN A LONGITUDINAL STROKE PATH DEFINED BY CONTACT AT TWO LIMITING POSITIONS AT SAID RESILIENT BUMPER AND THE OTHER OPPOSITE END WALL, SPRING MEANS POSITIONED IN SAID ENCLOSURE SURROUNDING SAID PIN FOR WEAKLY BIASING SAID YOKE TOWARD THE ONE OF SAID LIMITING POSITIONS AWAY FROM SAID RESILIENT BUMPER, SAID MEANS RELATIVELY POSITIONING ONE OF SAID END WALLS BEING ADJUSTED TO RECEIVE THE IMPACT OF THE PIN YOKE MOMENTARILY AT ONE END OF THE STROKE PATH TO COINCIDE WITH THE PIN STRIKING SAID TYPEWHEEL TO PRINT A CHARACTER THEREFROM AND QUICKLY RETRACT SAID PIN FROM CONTACT WITH SAID TYPEWHEEL BY MEANS OF ENERGY STORED IN SAID BUMPER.